Help a NYer: Places to eat near Rockville/Gaithersburg

Please help out a helpless NYer. I have reason to be in the Rockville/Gaithersburg area semi-regularly over the next several months, but I have no idea where to eat. When I was in town this weekend I followed chowhound and other recommendations to Tako Grille and Joe's Noodle House, both of which I found incredibly disappointing. I know there is supposed to be great ethnic food around Rockville and other parts of the Maryland suburbs, but I don't know where to find it (and I don't know who to trust). Can anyone give me some suggestions? I eat everywhere in NY and price point doesn't matter. It can be ethnic or fancy, scenic or drab, but it has to have great food. Suggestions?

On a related note, is there anywhere to get great crabs without driving to Baltimore or further?

I've really been enjoying Bob's Noodle, much more so than Joe's (which I find to be somewhat hit or miss). I am currently addicted to the ginger chicken casserole from Bob's. For Taiwanese little plates, try A&J. Their fried chicken is great (as are their scallion pancakes).